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Personality Correlates of Anorexia Nervosa in a Nonclinical Sample
The purpose of this study was to examine the relationship between anorexia nervosa and several personality traits. Past research in this area has been contradictory for several reasons. Sociocultural theories have described the media's role in promoting eating disorders by portraying a thin body-type as the ideal. However, they have neglected to describe the personality ideal which our society promotes in women. It is proposed here that anorexics incorporate and oppose this ideal. Therefore, the anorexic personality is one filled with conflict.
Date:
December 1994
Creator:
Rogers, Rebecca L. (Rebecca Lynn)
System:
The UNT Digital Library
The interaction of intense subpicosecond laser pulses with underdense plasmas
Laser-plasma interactions have been of interest for many years not only from a basic physics standpoint, but also for their relevance to numerous applications. Advances in laser technology in recent years have resulted in compact laser systems capable of generating (psec), 10{sup 16} W/cm{sup 2} laser pulses. These lasers have provided a new regime in which to study laser-plasma interactions, a regime characterized by L{sub plasma} {ge} 2L{sub Rayleigh} > c{tau}. The goal of this dissertation is to experimentally characterize the interaction of a short pulse, high intensity laser with an underdense plasma (n{sub o} {le} 0.05n{sub cr}). Specifically, the parametric instability known as stimulated Raman scatter (SRS) is investigated to determine its behavior when driven by a short, intense laser pulse. Both the forward Raman scatter instability and backscattered Raman instability are studied. The coupled partial differential equations which describe the growth of SRS are reviewed and solved for typical experimental laser and plasma parameters. This solution shows the growth of the waves (electron plasma and scattered light) generated via stimulated Raman scatter. The dispersion relation is also derived and solved for experimentally accessible parameters. The solution of the dispersion relation is used to predict where (in k-space) and …
Date:
May 11, 1995
Creator:
Coverdale, C.A.
System:
The UNT Digital Library
A Study of the Relationships Among Social Interest, Marital Satisfaction, and Religious Participation
The purpose of this study is to investigate the possible relationship between social interest and marital adjustment in a selected group of married couples. Another variable relating to spiritual well-being and religious participation is also considered. In the studies reviewed, the concept of social interest as proposed by Adler has been supported as a psychological construct. It has generally correlated with characteristics that are viewed as social interest components. By contrast, it has generally related negatively with characteristics that are inconsistent with the concept. Of the investigations conducted, most have focused on the relationship between social interest and some aspect of individual functioning, such as psychological well-being, health, mood states, and locus of control. There has been little investigation between social interest and some aspect of individual functioning, such as psychological well-being, health, mood states and locus of control. There has been little investigation between social interest and marital satisfaction and, additionally, the possible relationship to religious participation. The results of this study support a positive relationship between social interest and marital satisfaction, a positive relationship[ between social interest and religious participation, and a positive relationship between marital satisfaction and religious participation.
Date:
August 1997
Creator:
Thornton, John Michael, 1950-
System:
The UNT Digital Library
Critical Power as a Predictor of Performance in a Bicycle Time Trial
Certain measures of aerobic power have been shown to have a high relationship with endurance performance. Critical power (CP) has also been shown to be well correlated to endurance performance, but few studies have evaluated its use in a competitive scenario. In this study, cardiorespiratory-metabolic measures were evaluated in 13 highly trained cyclists to determine their relationship to performance in a 17 km time trial. Critical power, determined from the nonlinear power-time model, was also evaluated to determine its relationship to performance in a 17 km time trial. Results indicate that the traditional indicators of V02max and ventilatory anaerobic threshold were well correlated to TT performance (r=-0.86, r=-0.79, respectively). The principal finding from this study was that performance in a bicycle time trial is related to CP at least as well as to cardiorespirator-ymetabolic measures. In fact, the results fromthis study suggest that the relationship between performance and CP is stronger (r=-0.89). Use of the critical power concept is attractive because testing requires only a cycle ergometer and a stopwatch to estimate a parameter of aerobic fitness.
Date:
December 1994
Creator:
Dangelmaier, Brian (Brian S.)
System:
The UNT Digital Library
Stochastic Characterization of Cast Metal Microstructure
The major goal of this work is to provide a means to characterize the final structure of a metal that has solidified from a melt. The thermally controlled solidification of a binary alloy, nucleated at isolated sites, is described by the evolution of a probability distribution function (PDF). The relevant equation required for propagating the PDF is developed with variables for grain size and distance to nearest neighbor. The phenomena of nucleation, growth, and impingement of the grains are discussed, and used as the basis for developing rate equations that evolve the PDF. The complementary equations describing global heat and solute transfer are discussed, and coupled with the microstructure evolution equations for grain growth and PDF evolution. The full set of equations is solved numerically and results are compared with experimental data for the plutonium 1 weight percent gallium system. The three principal results of this work are: (1) The formulation of transient evolution equations for the PDF description of nucleation, growth, and impingement of a distribution of grain sizes and locations; (2) Solution of the equations to give a correlation for final average grain size as a function of material parameters, nucleation site density, and cooling rate; and (3) …
Date:
June 1, 1999
Creator:
Steinzig, M.
System:
The UNT Digital Library
Juvenile Waiver to Adult Criminal Courts: a Prototypical Analysis of Dangerousness, Sophistication-Maturity, and Amenability to Treatment
Psychological assessment ofjuveniles being considered for waiver to adult criminal courts often requires systematic evaluation of dangerousness, maturity-sophistication, and amenability to treatment (ATX). Despite the importance of these constructs to the evaluation of juveniles, little is known about the criteria that constitute these three constructs. This study was designed to assist in clarifying the constructs of dangerousness, maturity-sophistication, and ATX that typically guide juvenile transfers. Generally, prototypicality ratings were aligned with the current literature on dangerousness, sophistication-maturity, and ATX.
Date:
August 1998
Creator:
Salekin, Randall T. (Randall Todd)
System:
The UNT Digital Library
First-Time Parenthood: Attachment, Family Variables, Emotional Reactions, and Task Responsibilities as Predictors Of Stress
The purpose of this study was to explore factors which are predictive of parenting stress for first-time parents. Based on attachment theory and empirical research, the factors investigated were the responsibility for child care and housework, the current and retrospective relationship with the family of origin, the change in emotions related to parenthood, the marital relationship, and attachment and individuation.
Date:
December 1990
Creator:
Abbott, Donna Christine
System:
The UNT Digital Library
PTSD in Women following a Disaster: the Effects of Social Support and Gender Differences
The purpose of this study was to examine and compare individuals that had survived a single incidence trauma, the Luby's massacre in Killeen, Texas. Participants answered questions regarding various facets of social support following the trauma, and were also screened for a diagnosis of PTSD. Participants' level of symptoms, specifically depression, anxiety, and phobic anxiety was measured over time with the SCL-90-R. The results of this study indicate that, while women initially experience a higher level of depression and phobic anxiety, there is no gender difference in rate of symptom change over time. This study also found that women were significantly higher than men on desirability, utilization and usefulness of social support. Of the target symptoms, however, only depression correlated with any facet of social support, specifically, desirability. Finally, this study questioned whether individuals would share more similarities with others based on gender or diagnosis. It is suggested by the current data that diagnosis is the better indicator of similarity.
Date:
December 1996
Creator:
Direiter, Diana C. (Diana Charity)
System:
The UNT Digital Library
Discipline-Based Art Education as the Structural Support of a Language-Arts Intervention Program: Documentation of Cognitive Changes in Certain Elementary-Age Students
This study follows the progress of 11 elementary students who exhibited similar language-arts deficiencies and were treated with traditional and non-traditional language-arts remediation methods. Non-traditional methods were exclusively Discipline-Based Art Education (DBAE) lessons that required students to observe, talk about, and write about art images using a DBAE framework. Portfolios maintained by the students during one complete school year included writings and art production. Writings were marked using a color-coding system developed for the research project and designed to track growth in art cognition. Interviews for affective measure and the Test of Non-Verbal Intelligence, Edition II were administered as pre- and post-tests. Evidence indicated art understanding improved as cognition in language arts improved. Change in attitudes toward art and artists demonstrated a slight positive change. No significant difference was detected in non-verbal intelligence.
Date:
December 1996
Creator:
Stephens, Pamela Geiger
System:
The UNT Digital Library
A Descriptive Study of Parenting Styles and Behaviors of 4-Year-Old Children When Parents Participate in a Parenting Education Program
This study described and explored perceptions of the context and behaviors of seven 4-year-old children whose parents attended a parenting education program. The problem was to explore a group of 9 volunteer parents' perceptions of their parenting styles and perceptions of their 4-year-old children at home while the parents participated in, and completed, a minimum of 4 out of 6 Active Parenting Today parenting education classes. Volunteer parents were recruited during public school registration for prekindergarten. In addition, perceptions of 4 teachers and 4 classroom educational aides in regard to behaviors of the 4-year-old children whose parents participated in and completed the Active Parenting Today program were explored.
Date:
May 1997
Creator:
Redwine, S. Michelle (Sondra Michelle)
System:
The UNT Digital Library
Effects of Venture Team Demographic Characteristics on Team Interpersonal Process Effectiveness in Computer Related Venture Teams
In order to remain competitive, firms must be able to merge diverse, differentiated people into teams. In comparison to solo ventures, venture teams not only offer a broader base of physical and financial resources and varying points of view, but also positively influence the profitability, growth, and survivability potential of new ventures. Despite the growing importance and potential benefits offered by venture teams, relatively little is known about assembling and maintaining effective venture teams in the field of entrepreneurship. More specifically, information is needed to understand what composition and combination of demographic characteristics of team members would contribute to the effectiveness and success of a venture team. In this study the relationship between venture team demographic characteristics and team effectiveness (which is defined in terms of the interpersonal process of venture team members in their group activities) is investigated. The demographic characteristics examined include average age, age heterogeneity, average level of education, educational background heterogeneity, gender heterogeneity, and functional background heterogeneity. A field study, involving face-to-face and telephone interviews with the venture teams is used to gather data from40 computer related venture teams in a large midwest U.S. city. The venture teams are identified through the local Chambers of Commerce, …
Date:
August 1996
Creator:
Ochani, Manju
System:
The UNT Digital Library
The American Eve: Gender, Tragedy, and the American Dream
America has adopted as its own the Eden myth, which has provided the mythology of the American dream. This New Garden of America, consequently, has been a masculine garden because of its dependence on the myth of the Fall. Implied in the American dream is the idea of a garden without Eve, or at least without Eve's sin, traditionally associated with sexuality. Our canonical literature has reflected these attitudes of devaluing feminine power or making it a negative force: The Scarlet Letter, Moby-Dick, Adventures of Huckleberry Finn, The Great Gatsby, and The Sound and the Fury. To recreate the Garden myth, Americans have had to reimagine Eve as the idealized virgin, earth mother and life-giver, or as Adam's loyal helpmeet, the silent figurehead. But Eve resists her new roles: Hester Prynne embellishes her scarlet letter and does not leave Boston; the feminine forces in Moby-Dick defeat the monomaniacal masculinity of Ahab; Miss Watson, the Widow Douglas, and Aunt Sally's threat of civilization chase Huck off to the territory despite the beckoning of the feminine river; Daisy retreats unscathed into her "white palace" after Gatsby's death; and Caddy tours Europe on the arm of a Nazi officer long after Quentin's suicide, …
Date:
May 1993
Creator:
Long, Kim Martin
System:
The UNT Digital Library
Analysis of Reporting Compliance of Labor Relations Consultants Under Section 203 (b) of the Labor-Management Reporting and Disclosure Act, 1959
This study examines the reporting compliance, as defined by section 203(b) of the Labor -Management Reporting and Disclosure Act (LMRDA), 1959, of labor relations consultants who engage in persuader activity. Organized labor suggests that the loss in union strength results, in large part, from management's use of labor relations consultants and their failure to file required reports with the U.S. Department of Labor. Two samples of labor relations consultants known to have engaged in persuader activity and two samples of those who could be engaged in persuader activity are identified. A research questionnaire is mailed to 779 of the total of 887 labor relations consultants for whom an address could be developed. Discriminant analysis using 16 variables correctly classifies 93.8 percent of the responding labor relations consultants grouped according to whether they had filed required reports. Other discriminant analyses using selected variables are also conducted. Three associated questions are answered. First, there are an estimated 850 labor relations consultants who have engaged in persuader activity or who can be presumed to have engaged in persuader activity. Of this number, almost 500 are estimated to have engaged in persuader activity and only 30 percent of these are estimated to have filed …
Date:
December 1990
Creator:
Asdorian, Martin
System:
The UNT Digital Library
Analysis of the application of decontamination technologies to radioactive metal waste minimization using expert systems
Radioactive metal waste makes up a significant portion of the waste currently being sent for disposal. Recovery of this metal as a valuable resource is possible through the use of decontamination technologies. Through the development and use of expert systems a comparison can be made of laser decontamination, a technology currently under development at Ames Laboratory, with currently available decontamination technologies for applicability to the types of metal waste being generated and the effectiveness of these versus simply disposing of the waste. These technologies can be technically and economically evaluated by the use of expert systems techniques to provide a waste management decision making tool that generates, given an identified metal waste, waste management recommendations. The user enters waste characteristic information as input and the system then recommends decontamination technologies, determines residual contamination levels and possible waste management strategies, carries out a cost analysis and then ranks, according to cost, the possibilities for management of the waste. The expert system was developed using information from literature and personnel experienced in the use of decontamination technologies and requires validation by human experts and assignment of confidence factors to the knowledge represented within.
Date:
September 30, 1993
Creator:
Bayrakal, S.
System:
The UNT Digital Library
Strategic Planning in Dental Education
The extent of the application of the strategic planning process on dental education institutions was the problem in this descriptive study. The specific purpose was to describe the status of strategic planning based on the perceptions of the respondents. The organization, the characteristics and the impact of the strategic planning process would be investigated and described by this research. The total population of the doctoral and post-doctoral dental education institutions were included in the study. A specifically developed research instrument was used to elicit the perceptions of the respondents, both experts and chief executive officers (deans). All the experts (100 percent) completed and validated the research instrument and 65 percent of the dental education institutions completed the research instrument. The research instrument evaluated three areas of strategic planning: organization, characteristics, and the impact of strategic planning on their institutions. It was concluded that all dental education institutions participate in the strategic planning process and that the organization in the strategic planning process and that the organization and characteristics are generally similar to those in higher education institutions. The application of the strategic planning process has been proven beneficial in higher education institutions and there are perceived benefits in dental education. …
Date:
August 1990
Creator:
Miranda, Francis L. (Francis Louis)
System:
The UNT Digital Library
Ambiguity of Loss, Anticipatory Grief, and Boundary Ambiguity in Caregiver Spouses and Parents
The purpose of the present cross-sectional study was to examine the effects of ambiguity of loss and type of caregiver-to-patient relationship on anticipatory grief, negative physical and psychological outcomes associated with grief, and boundary ambiguity in family caregivers of chronically ill patients. Questionnaires were completed by 23 parents of ill children and 30 spouses of ill mates. Using an original and a revised concept for level of ambiguity, partial support was found for the prediction that parents and spouses in high ambiguity of loss circumstances would report more anticipatory grief than those in low ambiguity ones. Contrary to prediction, a slight but nonsignificant trend occurred for parents and spouses in low ambiguity situations to report more negative physical and psychological effects associated with grief as well. Level of ambiguity was not found to impact boundary ambiguity as had been hypothesized. Spouses reported more boundary ambiguity than parents, regardless of level of ambiguity of the loss. Contrary to prediction that parents would report less anticipatory grief and more negative physical and psychological outcomes than spouses, generally, no significant differences were found between the two groups. However, using the original concept of ambiguity, parents did tend to recall more past grief than …
Date:
August 1993
Creator:
Rider, Jan, K. (Jan Kathleen)
System:
The UNT Digital Library
The spectre of uncertainty in communicating technological risk
The literature does not clearly describe the potential moral and ethical conflicts that can exist between technology sponsors and the technical communicators whose job it is to present potentially risky technology to the non-technical people most likely to be imperiled by such risk. Equally important, the literature does not address the issue of uncertainty -- not the uncertainty likely to be experienced by the community at risk, but the unreliable processes and methodologies used by technology sponsors to define, quantify, and develop strategies to mitigate technological risks. In this paper, the author goes beyond a description of risk communication, the nature of the generally predictable interaction between technology advocates and non-technically trained individuals, and current trends in the field. Although that kind of information is critical to the success of any risk communication activity, and he has included it when necessary to provide background and perspective, without knowing how and why risk assessment is done, it has limited practical applicability outside the sterile, value-free vacuum in which it is usually framed. Technical communicators, particularly those responsible for communicating potential technological risk, must also understand the social, political, economic, statistical, and ethical issues they will invariably encounter.
Date:
December 1, 1993
Creator:
Broesius, M. T.
System:
The UNT Digital Library
Patterns of Vision, Action, and Effects in Professional Development as Experienced in the Texas Centers for Professional Development and Technology
In 1992, the state of Texas awarded a number of inducement grants to collaboratives of universities, schools, and service centers to develop field-based professional development schools (PDSs) and provide preservice and inservice teachers with extensive professional development. This study investigated the design and effects of the professional development models in these Texas Centers for Professional Development and Technology (CPDTs). This study used qualitative data collection and analysis procedures. Raw data were collected in the form of individual interviews, focus group interviews, documentation, and fieldnotes. Forty-six interviews were completed involving a total of 83 respondents representing all partnering entities: university representatives, school representatives, education service center representatives, and policymakers. Documentation included annual and quarterly reports, grant applications, and program approval requests. Fieldnotes included observational data from site visits. Data analysis was an iterative process using a constant comparative analysis of coded categories emerging fromtranscribed data. This comparison examined: the vision of professional development as perceived by the respondents, the enactment of professional development as experienced by the respondents, and the effects that the CPDT initiative had on professional development as perceived by the respondents. This study revealed 18 themes that were common across all eight Texas CPDTs. The themes revealed patterns …
Date:
August 1996
Creator:
Kjelgaard, Peggy Anne
System:
The UNT Digital Library
Perceived Family Competence and Late Adolescence: an Exploratory Look at Affective, Cognitive, and Interpersonal Variables
The purpose of this study was to explore the effects of perceived family competence on late adolescent problem-solving abilities, family relationships, and affective experience. Specific areas of interest were perceived confidence in problem-solving and approach rather than avoidance of problems; intergenerational intimacy, intergenerational individuation, and personal authority in the family system as the adolescent relates to parents; and level of depression. Subjects were 256 late adolescents whose parents were still married and living together. Results indicated that perceived family competence had an effect on the dependent variables in the expected directions. Specifically, individuals who scored high on perceived family competence were high on perceived problem-solving confidence, approached problem-solving, were high on intergenerational intimacy, intergenerational individuation, and personal authority in relation to parents, and had less depression than individuals low on perceived family competence. Several sex differences were noted. Females had significantly higher approach to problem-solving than did males. Women reported significantly higher intergenerational intimacy with parents than did men. There was a significant interaction on personal authority such that for the high perceived family competence group, women scored higher than men. However, there were no significant differences between males and females in the low perceived family competence group.
Date:
August 1992
Creator:
Swart, Jana L. (Jana Leigh)
System:
The UNT Digital Library
Large eddy simulation of Rayleigh-Taylor instability using the arbitrary Lagrangian-Eulerian method
This research addresses the application of a large eddy simulation (LES) to Arbitrary Lagrangian Eulerian (ALE) simulations of Rayleigh-Taylor instability. First, ALE simulations of simplified Rayleigh-Taylor instability are studied. The advantages of ALE over Eulerian simulations are shown. Next, the behavior of the LES is examined in a more complicated ALE simulation of Rayleigh-Taylor instability. The effects of eddy viscosity and stochastic backscatter are examined. The LES is also coupled with ALE to increase grid resolution in areas where it is needed. Finally, the methods studied above are applied to two sets of experimental simulations. In these simulations, ALE allows the mesh to follow expanding experimental targets, while LES can be used to mimic the effect of unresolved instability modes.
Date:
December 1, 1999
Creator:
Darlington, R
System:
The UNT Digital Library
In Vitro Studies of Nuclear Changes in Mammalian CNS Neurons Subjected to Rapid Acceleration Impact Injury
An in vitro model of Rapid Acceleration Impact (RAI) Injury was used to study the effects of multiple impact (220 g/impact, 3-5 sec intervals) trauma on cultures of murine CNS cells. Investigations with spinal cord cultures showed that 1) multiple impacts delivered tangential to the plane of cell growth caused neuronal death (12% after 3 impacts to 46% after 10 impacts); 2) multiple impacts delivered normal to the plane of cell growth were much less effective (8% dead after 10 impacts); 3) most neuronal death occurred within 15 minutes after injury 4) morphological changes observed included increased nuclear prominence and somal swelling; and 5) pretreatment with ketamine (0.1mM) reduced cell death from 51 to 14% and reduced somal swelling. Identical studies performed on cortical cultures revealed minimal differences between the two tissues in their response to multiple tangential impacts.
Date:
May 1995
Creator:
Wolf, Amy
System:
The UNT Digital Library
Charge State Dependence of L-Shell X-Ray Production Cross Sections of ₂₈Ni, ₂₉Cu, ₃₀Zn, ₃₁Ga, and ₃₂Ge by Energetic Oxygen Ions
Charge state dependence of L-shell x-ray production cross sections have been measured for 4-14 MeV ¹⁶O^q (q=3⁺-8⁺) ions incident on ultra-clean, ultra-thin copper, and for 12 MeV ¹⁶O^q (q=3⁺-8⁺) on nickel, zinc, gallium and germanium solid foils. L-shell x-ray production cross section were measured using target foils of thickness ≤0.6 μg/cm² evaporated onto 5 μg/cm² carbon backings. Oxygen ions at MeV energies and charge state q were produced using a 3MV 9SDH-2 National Electrostatics Corporation tandem Pelletron accelerator. Different charge states, with and without K-vacancies, were produced using a post acceleration nitrogen striping gas cell or ¹²C stripping foils. L-shell x-rays from ultra-thin ₂₈Ni, ₂₉Cu,₃₀Zn,₃₁Ga, and ₃₂Ge targets were measured using a Si(Li) x-ray detector with a FWHM resolution of 135 eV at 5.9 keV. The scattered projectiles were detected simultaneously by means of silicon surface barrier detectors at angle of 45° and 169° with respect to the beam direction. The electron capture (EC) as well as direct ionization (DI) contributions were determined from the projectile charge state dependence of the target x-ray production cross sections under single collision conditions. The present work was undertaken to expand the measurements of L-shell x-ray production cross sections upon selected elements with low …
Date:
August 1996
Creator:
Azordegan, Amir R. (Amir Reza)
System:
The UNT Digital Library
Alcohol Use, Violence, and Psychological Abuse in Intimate Relationships
Women in distressed relationships who had sustained severe psychological abuse and either no, moderate, or severe violence from their partner were included (N = 93). Men's and women's alcohol use did not differ with level of violence. Different patterns were found in the moderate violence group regarding women's beliefs about their partner's substance problem, men's psychological abuse, and the relationship of men's and women's quantity of alcohol use and times intoxicated. Uncertainty resulting from moderate violence may strengthen the emotional impact of psychological abuse. Even when psychological abuse is exacerbated by violence, women may use active coping techniques rather than drinking to cope with abusive relationships. The findings suggest that an inordinate focus on alcohol abuse may be ineffective in combating the problem of domestic violence.
Date:
August 1998
Creator:
Falla, Karen M.
System:
The UNT Digital Library
A Study of Korean Kindergarten Teachers' Concerns
The problem of this study was to identify some concerns of Korean kindergarten teachers at different points in their careers, based on the conceptual framework of Katz's (1972, 1977, 1985) theory of preschool teacher development. This study also described the variations in these concerns on the basis of some teacher characteristics including teaching experience, certification, educational background, inservice training, and teaching assignment. The subjects for this study were 174 volunteers who were Korean kindergarten teachers in Seoul, Korea. The concerns of the teachers were expressed through the Kindergarten Teacher Concerns Questionnaire, consisting of two parts: (a) background information, and (b) the Kindergarten Teacher Concern Rating Scale (KTCRS), consisting of a list of 54 items developed by Tsai (1990), reflecting the four areas of concerns—Survival, Consolidation, Renewal, and Maturity—formulated by Katz. A Likert type 5-point scale indicating the degree of concerns was used in the questionnaire as the scoring system. The following conclusions were drawn from this study: 1. The concerns of the Korean kindergarten teachers were developmental in nature in terms of preoccupation with a specific area of concerns at different points in the teachers' careers. This result tended to follow a sequence of stages as posited by Katz (1972, …
Date:
December 1992
Creator:
Park, Guen K.
System:
The UNT Digital Library